Travis Bunn

Founder, AppealDesk · Published August 19, 2026

California Reassesses Inherited Homes to Market Value, Unless You File Prop 19's Exclusion in Time

Updated August 2026

Every California property is capped under Proposition 13: assessed value can grow at most 2% a year, no matter what the market does, until a change of ownership resets it to full market value. Inheritance is, by default, a change of ownership. The only thing standing between an heir and a full reset is Proposition 19's intergenerational transfer exclusion, and it is narrower, more deadline-driven, and less forgiving than most people assume.

If your parents bought their home decades ago, the gap between its capped assessed value and today's market value can be enormous. Get the exclusion right and you can inherit that gap along with the house. Get it wrong, miss a deadline, or inherit the wrong kind of property, and the county resets to full value with no way back.

Why Inheritance Normally Means Reassessment

Revenue and Taxation Code §60 defines a change in ownership as a transfer of a present interest in real property equal in value to the fee interest. Section 61 lists categories of transfers the state treats as a change in ownership, and nothing in that statute exempts inheritance generally. Absent a specific exclusion, a property passing to an heir gets a new base year value as of the date of death, set at fair market value.

That is the default. The exclusion is the exception, and since November 2020 it works very differently than it used to.

Proposition 19 Replaced the Old Rules on February 16, 2021

For decades, Propositions 58 (1986) and 193 (1996), codified at RTC §63.1, let a parent exclude an unlimited-value family home plus up to $1,000,000 of any other real property per transferor, rentals, vacation homes, commercial buildings, with no requirement that the child actually live in any of it. Proposition 19 tore that up. Its implementing statute, RTC §63.2, applies to transfers on or after February 16, 2021, and it is dramatically stricter on three fronts:

• Occupancy is now required on both ends. The old law only required the parent to have used the home as their residence. The new law requires the transferee to also make it their own principal residence, within one year of the transfer.
• Other real property lost its exclusion entirely. Rentals, vacation homes, and commercial buildings inherited from a parent get no exclusion of any kind under Prop 19. If it is not the family home or a family farm, it reassesses to full market value, period.
• The family home itself now has a value cap. Even a qualifying principal residence is not fully shielded if it has appreciated enough.

Transfers completed on or before February 15, 2021 are still governed by the old, more generous §63.1 rules. Everything below describes the current law.

The $1,044,586 Cap, and How the Partial Step-Up Actually Works

The exclusion is not unlimited even for a qualifying family home. It covers the property's factored base year value plus an inflation-adjusted allowance that the Board of Equalization recalculates every two years:

• February 16, 2021 to February 15, 2023: $1,000,000
• February 16, 2023 to February 15, 2025: $1,022,600
• February 16, 2025 to February 15, 2027 (current): $1,044,586

If the home's fair market value at transfer exceeds the factored base year value plus that allowance, only the excess above the combined figure gets added to the new taxable value, it is a partial step-up, not a cliff. As a purely hypothetical illustration drawn from BOE's own worked example: a parent's factored base year value is $300,000. The allowance is $1,000,000. Combined, $1,300,000 is excluded. If the home is worth $1,500,000 at transfer, only the $200,000 excess is added, producing a new taxable value of $500,000, not the full $1,500,000.

The One-Year Clock Starts at Death, Not at Probate

This is the detail that catches the most heirs. BOE guidance is explicit: for the one-year occupancy requirement, the date of death is considered the date of transfer, whether or not probate has closed or title has formally been distributed. If probate runs long, which it often does, the clock is running the entire time.

Within that same one year, the transferee must also file for the Homeowners' Exemption (BOE-266) or Disabled Veterans' Exemption (BOE-261-G). The statute states there are no exceptions to this filing period. Missing it does not forfeit the exclusion outright, but it does change what you get, see below.

The claim itself, BOE-19-P for a parent-child transfer or BOE-19-G for grandparent-grandchild (only when the connecting parent is also deceased), must be filed with the county assessor by the earlier of three years after the transfer or before the property is sold to a third party. If a county sends a notice of potential eligibility, missing the follow-up 45- and 60-day windows can add a processing fee of up to $175, but does not shorten the three-year statutory deadline.

What Happens If You File Late

If the property would have qualified but the paperwork is late, California gives prospective relief only. In BOE's own hypothetical: a parent transfers a home in March 2021, the child timely files the homeowners' exemption but not the exclusion claim, so the county reassesses to full market value for that transfer. If the exclusion claim is eventually filed years later, the exclusion is applied only from the lien date of the year the late claim is filed forward, the years already billed at full value are not refunded. The same rule applies to a late homeowners'-exemption filing: relief starts the year you actually file, not the year you inherited.

If the property never qualifies at all, a rental, a vacation home, or a family home the heir never moves into, there is nothing to lose retroactively. It is simply reassessed to market value from day one, because no exclusion was ever available for that kind of transfer under current law.

Multiple Heirs and Sibling Buyouts

Only one of several sibling co-owners needs to occupy the home as their principal residence to preserve the exclusion for the whole property, and per Santa Cruz County's guidance, if that sibling later moves out, a different sibling can move in within a year and file their own homeowners' exemption to keep it going. But the exclusion runs parent to child, not sibling to sibling: if one sibling later buys out the others' inherited shares, the portion transferred in that buyout is a new, non-exempt transfer and gets reassessed at that later date, even though the original inheritance was excluded.

One more edge case worth knowing: if the home's fair market value at transfer is actually lower than its factored base year value, filing for the exclusion can lock in a worse number than a plain reassessment would. In a flat or declining local market, check the math before assuming the exclusion is automatically the right move.

No State Estate or Inheritance Tax, With One Federal Caveat

California repealed its inheritance tax in 1982. A state estate tax statute, RTC §13302, technically remains on the books, but it is a pick-up tax pegged to a federal credit that Congress phased out for deaths after January 1, 2005, so it computes to zero for every estate today. There is no California death tax to plan around.

The federal estate tax is a separate matter and only touches large estates: the exclusion is $13,990,000 per decedent for 2025 and $15,000,000 for 2026. Most families never come close and never file a federal estate tax return.

If the Reassessed Value Itself Is Wrong

The exclusion claim and a property tax appeal are two different tracks, and you can pursue both. If the county's market-value determination on an inherited property looks too high, whether the exclusion applied or not, you can file BOE-305-AH, an Assessment Appeal Application, with the county's Clerk of the Board. The regular filing window runs July 2 through September 15, extended to November 30 in counties that do not mail assessment notices to all taxpayers by August 1, a choice each county makes annually, so confirm your specific county's window. If you did not receive your notice at least 15 days before the deadline, you get 60 days from actually receiving it or from the tax bill, whichever is earlier.

An inheritance typically generates a supplemental or escape assessment, a special notice outside the normal annual cycle reflecting the new base year value as of the date of death. That specific notice carries its own appeal rights, separate from and in addition to the exclusion claim process.

For most California heirs, the sequence that actually protects the family home is straightforward even though the rules are not: move in within a year, file the homeowners' exemption within that same year, file the exclusion claim well before the three-year deadline, and check whether the numbers even favor filing at all. Miss any one of those, and the state's default, full reassessment with no retroactive fix, is what runs instead.

Frequently Asked Questions